The Umbrella Academy (TV Series) - Wikipedia

The Umbrella Academy is set in a universe where 43 women around the world gave birth simultaneously at noon on October 1, 1989, although none had shown any sign of pregnancy until labor began. Seven of the children are adopted by eccentric billionaire Sir Reginald Hargreeves and turned into a superhero team that he calls "The Umbrella Academy." Hargreeves gives the children numbers rather than names, but their robot-mother, Grace, later names six of them: Luther, Diego, Allison, Klaus, Ben, and Vanya.[b][1] Reginald puts six of the children to work fighting crime but keeps Vanya apart from her siblings' activities, claiming she demonstrates no powers of her own.

The first season is set in the present day, where Luther is part ape and has lived on the Moon for four years, Allison is a famous actress, Vanya is a violinist, Klaus has a drug addiction, Five disappeared sixteen years earlier, Ben, now deceased, is a ghost able to converse only with Klaus, and Diego has become a vigilante. The estranged siblings learn that Reginald has died and gather for his funeral. Five returns from the future, revealing that a global apocalypse is imminent, but is chased by time-travelling Commission operatives Hazel and Cha-Cha. The reunited siblings try to uncover the secrets behind Reginald Hargreeves' life, and their dysfunctional relationships are strained. They band together to try to prevent the impending apocalypse.[2]

The second season sees the siblings scattered in Dallas at different times in the early 1960s (as a result of the events of the first season), establishing lives for themselves. Five arrives there on November 25, 1963, minutes before a nuclear doomsday that is linked to JFK not being assassinated, but with the help of Hazel manages to travel back ten days. Five is hunted by a trio of Swedish assassins but finds his siblings, who have all made new lives, and attempts to reunite them in order to stop this new apocalypse.[3]

In the third season, the siblings realize their actions in the past created a new timeline and returning to 2019 is vastly different where they have been replaced by another Hargreeves superhero group adopted by Reginald, dubbed "The Sparrow Academy". They also have to find a way to stop a kugelblitz from consuming and destroying the universe created as a result of the grandfather paradox the siblings caused through their time-travel. They successfully reset the universe, while losing their powers in the process, and go their separate ways.

In the final season, the siblings reconnect with the goal of stopping the "Cleanse". They also regain their powers in the process, and some have augmented or completely different powers. At the end they eventually realize that the only way to save the timeline is to erase themselves from the universe. They come to terms with this fact and let the Cleanse reset the timeline back to normal, removing all traces of the Umbrella Academy's existence.